Duplicating apparatus



Sept; 16, 1930. l.. w. WAGNER DUPLICATING APPARATUS 4 sheets-sheet Filed Nov. 26, 1927 \\s lllllllllIl/Ilfllllll lIlI/llllIll/l dwg/zezi ATTO R N EY Sept. 16, 1930. w WAGNER DUPLIGATING APPARATUS Filed Nov. 26. 1927 4 Sheets-Sheet 2 ATTORNEY www2.

Sept. 16, 1930. w. WAGNER DUPLICATING APPARATUS 4 Sheets-Sheet 3 Filed Nov. 26. 1927 ATTOR N EY @ga/M1925( Sept. 16, 1930. y W, WAGNER 1,775,979

DUPLIGATING APPARATUS nimm:

Patented Sept. 16, 193@ unirse stares PATENT orme LUDWIG- W. WAGNER, OF SAN ANTONIO, TEXAS, ASSIGNOR TO A. B. DICK mm, OF

CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS i DUPLICATING APPARATUS Application filed November 28, 1927. Serial No. 235,934.

rlhe object of this invention is to provide a device of the type employing a stencil to be mounted on an element through which 'ink is supplied for producing an impression when said element is oscillated with reference to the sheets of paper being fedto the machine.

A further object is to provide particular means for automatically moving the papers l0 to printing position, and to provide improved inking mechanism.

With the foregoing and other objects in view, the invention consists in the novel construction and arrangement of elements w described, illustrated and claimed, it being understood that modifications may be made within the scope of the claims without departin from the spirit of theinvention.

v In t e drawings forming a part of this 20 application,

Figure 1 is a view of the machine in side elevation, with parts in dotted lines,

Fig. 2 is also in elevation, so far as operative elements are concerned, but constitutes 25 a vertical longitudinal section through thev framework, the oscillating element being in the opposite position,

Fig. 3 is a' vertical section through the oscillating element, the inking means, and 30 through the roller, mounted in the special manner indicated below,

Fig. 4 is a vertical section transversely of the machine, with the inner sideof the perforated plateor` the oscillating member in elevation,

Fig. 5 is a detail view, in section, showing the means for retaining the stencil, etc.,

Fig. 6 is also a detail in section, on line 6--6 of Fig. 5,

Fig. 7 shows a below,

Fig. 8 is a detail in section showing the mounting of a ypivoted dog referred to below 5 Fig. 9 is a detail showin an end portion of the fabric through whic the ink passes,

Fig. 10 shows an end portion of the stencil, with apertures, permitting the stencil to be 'connected with the retaining devices on the 5@ oscillating element,

4 detail, in section, described Fig. 11 is a detail in elevation, showing the ink brush, etc.,

Fig. 12, in elevation and section, shows adjustable paper guide,

Fig. 13 shows the latter in top plan,

Fig. 14 is a fragmentary view in top plan, showing the adjustable paper receiving device, at the right of Fig. 1, and

Fig. 15 is a side elevation of the same, partly in section.

The frame of the machine includes standards 10 and 11 connected by rods 12 and 13, and mounted upon rubber or other elements 14, constituting feet. 65

An upper transverse shaft 15 may' be mounted by means of screws or the like 16, and the element carrying the stencil is adapted to swing or rock on this shaft 15. This stencil mounting device includes, side members 17 and 18 of segmental ormhaving rollers mounted therebetween near the ends thereof. The side member 17 carries a. handle 19 mounted by a slidable block 19 on an arcuate rib 20', on which a block 21 is also adjustably secured by means of a screw 22. This block 21 carries a stop 23, and a dog 24 is pivoted at 25 on the block and carries a, pin 26, serving the purpose indicated below.

Between the side members 17 and 18, I mount a perforated plate 28 through which ink is distributed, the ink also passing through fabric 29, and thence through the stencil 30. This stencil has of course been previously prepared, and the fabric and stencil are to be secured, at one end, by screws 32 passing through apertures 33 and 33', as shown especially in Figs. 9 and 10. These screws 32 enter the roller 20 at one end of the rocking stencil-carrying element and allow .for retaining the stencil and fabric in the position shown n Fig. 3.

The roller 2O at the opposite end of said rocking element, has cooperating therewith a curved plate 35, constituting in, effect, a 95 clamping element and including a rolled portion 36 adapted to rst engage the stencil and fabric with roller 20 and thereafter move them to the position of Fig. 3. The initial stage of the engaging operation is shown in 1Go bracket 38 is mounted by means of pivot 40 so that the relative positions of Figs. 5 and 3 may readily be assumed for the purpose indicated.

An ink receptacle is designated 42 and includes a transverse fixed sleeve 43 slidable on shaft 15. The discharge port for the ink is controlled by a valve 44 carried by a stem 45, this stem including an offset portion 46 projecting around the shaft 15 and sleeve 43. The spring 46 is interposed between the closure 47 and a transverse bar 48. the closure being fixed on the stem and the spring tending tohold the valve 44 in a closed position. The valve stem 45 carries a thumb member 49, depression of which opens valve The ink container 42 carries a tube 50 on its lower end, upon which is adjustably mounted the nozzle 51 held in position on said tube by a set screw 52. The nozzle member 51-carries a brush 53, andthe latter distributes the ink over the perforated plate 28, the ink, flowing thence through the fabric 29 and through stencil 30.

The sheets of paper ont-o which the matter is to be stenciled or printed by operation'of the stencil-carrying element, are placed on a table provided with slots 61 for the adjustable mounting of guides o r gauge members 62. These devices 62 are of angle bar Vform and carry pins 64 extending through washers 65 and spring washers 66, knurled nuts 67 being mounted on the pins and bearing on the elements 66. The paper guides 62 may therefore be shifted to anydesired position. and there secured by the retaining devices just described.

A receiving table or the like is shown at the l right of Fig. 1 and in Figs. 14 and 15 details of the mounting of an adjustable end member are shown. This element includes a plate member 68 having a slot or slots 69, said plate including an'end flange 70. This device is slidable to an adjusted posit-ion and located therein by nuts 71. The downwardly extending flanges 68 are notched as shown at 72, and these notches engage rod 13, whereas the end portion 73 of the paper receiving vdevice passes under the rod 74` so that the paper receiving element is held in a horizontal position. i

The paper supporting table on the feed side may be mounted in a similar manner but the details vary slightly. The side flanges 60 are provided .with end slots such as 75 adapted to engage rod or pin 76, and the flanges 60 are notched at 77 Vand engage the rod or pin 78. This permits of quick detachmentvor attachment by an obvious anguiar movement.

A transverse bar 81 has an arm at one end slotted at 82 and carrying an offsct'finger 83 ypassing through transverse shaft or rod 89 and .having thereon a collar or head 9.0 with a spring 91 interposed between the rod 89 and head 90.

The arms or bars 84 are notched at 84 for engagement by pins 84" to retain the elements in the position of Fig. 2.

Paper supporting roller 93 mounted on shaft is in :lower inoperative position in Fig. 2, and is held by the engaging means just described, but is released when pins 26 engage arms 84 upon rocking movement of the stencil from the position of Fig. 2 to that of Fig. 1'. Spring 91 is free to expand, and the left ends of. the 'angle arms of Fig.

2 move downwardly and thereby move roller' 93'mounted between the angle arms upwardf ly, for pressing the paper against the stencil in the manner shown in Fig. 1.

Engagement of the angle arms by pins 94 on the rocking element will throw these arms to the position of Fig. 2 and depress spring 95 is on the right hand side of the axial element about which the device is movable 1n an arc shaped path. The spring is secured at 97 to a bracket 98 extending from the rocking device, and the spring, or the upper end thereof, swings tothe other side ofthe axis of rotation, as the stencil mounting device moves from the position of Fig. 1 to that of Fig. 2, or in the opposite direction. Before applying the fabric 29 and the stencil 30, the pivoted dog 24 .is swung around to an inoper atlve position, and the arc shaped stencil mounting element is moved sufficiently to an upper left position, in Fig. 1`, to permit the aperture-d ends ofthe fabric to be secured to pins or screws 32 at the right. The spring clamp 35 is then moved'to the position of Fig. 5 causing it to engage the cloth, and is thereuafter swung to the position ofFig. 3. vThe tion'. The ink container holds ink for print- 130 ing a large number of copies, and the manner of controlling the feed from said container is obvious from an inspection of the drawings.

The impression roller finger 83 is held in lower locked position until paper feeding and printing actually begins. The paper guides on the table are adjusted as required, and the sheets of paper are fed manually from this table, the forward edge of each sheet being brought into contact with Athe finger or stop 83. The swinging stencil mounting element is moved to the position of Fig. l, so that dog 26 engages arm 84 and moves the notched port-ion 84 away from pin 84 permitting spring 91 to act for moving angle arm or arms 85 about pivot member 86, lifting impression roller 93 and pressing the paper sheets against the stencil. Slotted arm 81 mounting the linger 83 is itself loosely mounted on shaft 80, and drops to the position of Fig. l because slo'; 82 is engaged by a stationary pin 82 as the roller 93 moves upwardly. Slotted arm 8l carrying the finger 83, is rockingly supported on shaft 80 and moves to the position of Fig. 1, when the roller 93 is raised by reason of the engagement of the stationary pin 82 in the slot of said arm, said pin being carried by the ad- 'jacent side of the main frame.

In the printing operation, handle 19 is thrown downwardly` and to the left, from the position of Fig. l to that of Fig. 2, and element 94 engages angle arm 85 and causes its pin 84 to engage notch 84' on arm 84 when the angle arm has thrown impression roller 93 downwardly. Shaft 80 also moves downwardly throwing arm 8l and paper holding finger 83 upwardly to position for engagement by the edge of a new sheet of paper to be fed tothe machine by hand.

What I. claim is 1. In a duplicating machine, a frame, a stencil-carrying element mounted to swing therein, a roller adjustable relative to Said stencil-carrying element, supporting elements for said-roller, other elements co-operating with said supporting elements to determine the position of said roller relative to said stencll-carrying element, and resilient means connecting said supporting and other elements operable to move said roller to one of its positions relative to said stencil-carrying element. 1

2. In a duplicating machine, a frame, a

.' stencil-carrying-element mounted to swing therein, a roller adjustable relative to said stencil-carrying element. supporting elements for said roller, other elements co-operating with said supporting elements to determine the position of said roller relative to said stencil-carrying element, resilient means connecting said supporting and other elements operable to move said roller to one of its positions relative to said stencil-carrying element, a paper stop movably carried by said ment.

means, means whereby said trip devices may be moved to any position of adjustment throughout the entire length of said Stencilcarrying element and means to secure said trip devices in any of their adjusted positions.

4. In a duplicating machine, a main frame, a stencil-carrying element mounted to swing therein, a roller positioned below the path of said element, angle arms mounting the roller, resilient means acting upon said arms for moving said roller toward the stencil, pivoted arms, and means to produce interlocking engagement between said pivoted arms and. said angle arms to retain the latter in certain positions and to release said angle-arms to thereby render effective said resilient means.

5. In a duplicating machine, a main frame, a stencil-carrying element-'mounted to swingtherein. an arcuate portion carried by said element, a roller supported below the path of said element, angle arms supporting the roller for movement toward and away from said stencil-carrying element, pivoted arms having interlocking engagement with said angle arms in certain positions of adjustment of the latter, trip members carried by said arcuate portion for throwing said Vangle and pivoted arms into and out of inter-locking engagement, and means to move said roller toward said stencil-carrying element when said arms are out of interlocking engage- 6. In a duplicating machine, a main frame, a stencil-carrying element mounted to swlng therein, a roller co-operating with said element and movable toward and away therefrom, mechanism automatically controlled bythe position of the swinging element for changing vthe position of said roller relative to said element, a shaft on which said roller is mounted, a paper stop rockingly supported by said shaft and having a slot therein, anda stationary lpin engaging in said slot to reverse the direction of movement of said stop relative to the movement of said roller toward and away from said stencil-carrying element.

7. In a duplicating machine, a main frame, a stencil-carrying element -mounted to swing there-in, a roller supported below said element for movement toward and away therefrom, means controlled by the position of the swinging element for changing the vertical position of said roller relative to said element, a shaft on which said roller is mounted, a paper stop movably supported by said shaft and l-io mea-ns to move said stop upwardly toward said carrying 'element when Said roller is moved downwardly, and. vice versa'. f

'-8. In a, duplicating machine, amain rame,. a stencil-carrying element mounted to swing therein, a roller at one end of said elementto which one end of .a stencil is attachable, a clamping device co-operating with said roller to secure said end of the stencil therebetween, means for mount-ing the clamping device for angular movements relative to said roller prior to effecting a clamping engage -ment therewith, and means for securing the opposite end of the stencil to said carrying 15 element.

` In testimony whereof I affix my signature. LUDWIG W. WAGNER. 

